Landoll VT Plus 7550, Руководство оператора

Страница: 78 / 96

4-10 F-987-0519
OPERATION AND MAINTENANCE
Leveling (Side to Side)
1. An adjustable radius rod connects the center frame
lifts together to keep them operating in unison
( See
Figure 4-8. ) . The radius rod does not level the center
frame lift. The radius rod length is determined initially
by fully retracting the lift cylinders and adjusting the
radius rod until it is loose and tightening the jam nuts.
2. To level the center frame:
a. Verify that all of the tires are properly inflated.
b. With the unit unfolded, raise it to fully extend the
lift cylinders and continue holding the tractor
lever 30-60 seconds to insure the cylinders are
fully extended and the rephrasing lift system has
been purged of air.
c. Lower the unit so the disc blades are 1” off the
ground.
d. Measure the distance from the walking beam
spindle to the top of the frame on both sides. If
there is a difference, it needs to be adjusted by
turning the cylinder rods with the wrench flats
provided at the clevis end
( See Figure 4-9. and
See Figure 4-10. ) .
e. Let the machine down onto the ground to relieve
any pressure, but do not fully retract the
cylinders. Remove the 1-8 x 4 hex screw from
one end of radius rod.
f. Loosen the set screw in the cylinder rod block. If
the difference is 1/4” this requires turning the rod
of the short side one full revolution to lengthen
the cylinder. If the difference is 1/2” this requires
turning the rod of the short side out one full turn
and the rod of the tall side in one full revolution.
Any differences of less than a 1/4“are acceptable
for operating.
Figure 4-8: Leveling the Center Frame
3. After adjusting the cylinder rod or rods, the radius rod
needs to be adjusted back to a neutral position
( See
Figure 4-8. ) . This is accomplished by fully retracting
the lift cylinders and adjusting the radius rod until it
fits. Reinstall the1-8 x 4 hex screw in radius rod
assembly and then tighten 3/16-16 x 1/2 set screw
and the jam nuts on each end
NOTE
Center frame cylinders may have 1/8” rod exposed when
fully retracted due to the rephasing system.
CYLINDER ROD
BLOCK
HEX JAM
NUTS
3/8-16 X 1/2 HEX
SET SCREW
CYLINDER ROD
BLOCK
RADIUS ROD
ASSEMBLY
4-1/2 X 16
REPHASE
CYLINDER
1-8 X 4 HEX
SCREW
1-8 X 4 HEX
SCREW